LIR to PDX from $439 in economy – flightdeals.net

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United Airlines

UAUnited Airlines

Round Trip•Economy

Daniel Oduber Quirós International Airport

Liberia, Costa Rica

Portland International Airport

Portland, United States

$810 USD

-46%$439 USD

Verified 14 days ago

September 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$697 1$576 2$523 3$500 4$576 5$583 6$790 7$1,179 8$797 9$697 10$454 11$439 12$655 13$855 14$732 15$454 16$469 17$454 18$586 19$565 20$849 21$860 22$454 23$454 24$454 25$439 26$454 27 28$860 29$1,189 30$642 1$486 2$439 3$454 4$1,075

Limited Availability

11% of dates checked are available within 10% of the lowest price

Friday, September 25th, 2026

1 round-trip options

Returning

Sun, Oct 4, 2026•9 Day Trip

$439 USD